lean now to one side; now to the other; sway right and left; trim one's sails to the wind; waver
[waver;lean now to one side;now to the other;sway right and left;trim one's sails to the wind] 形容摇摆不定,没有坚定的立场和主张 这是个两边倒的人,不可相信
形容动摇不定，缺乏坚定的立场和主张。如：这个人太没主见，做事常是两边倒。